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Mathematics 21 Online
OpenStudy (anonymous):

Triangle ABE is similar to triangle ACD. Find y. I got y=4.6666. I think I got it wrong because I have a hard time solving these kind of questions xD.

OpenStudy (anonymous):

OpenStudy (anonymous):

2.64 is the answer i think but not sure

OpenStudy (anonymous):

PQ is twice the length of P'Q'

OpenStudy (anonymous):

xDD Anyone know how to solve this??

OpenStudy (anonymous):

law I think

OpenStudy (danjs):

ok

OpenStudy (anonymous):

Or maybe it's 14?? I don't know xD

OpenStudy (danjs):

The are similar, so the ratio of lengths are similar

OpenStudy (anonymous):

y I think 7

OpenStudy (anonymous):

How do I proceed to solve this question???

OpenStudy (danjs):

The ratio of the short triangle to the long triangle

OpenStudy (anonymous):

4y+28=4y+6y

OpenStudy (danjs):

sory i labled it wrong

OpenStudy (anonymous):

xDD

OpenStudy (danjs):

\[\frac{ 4 }{ 6 } = \frac{ y }{ y+7 }\]

OpenStudy (danjs):

6y = 4y + 28

OpenStudy (danjs):

AC is 6, not just that short part

OpenStudy (anonymous):

y=14!!

OpenStudy (danjs):

yep

OpenStudy (anonymous):

Thanks!! :D

OpenStudy (danjs):

\[\frac{ 4 }{ 6 } = \frac{ x }{ 3 }\]

OpenStudy (danjs):

If you want the x value too

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